Patent US8545447B2 successfully refreshed from Google Patents.
US8545447B2
Active / In Force
US
⏱️ 5.8 years remaining
Mechanical pump for removal of fragmented matter and methods of manufacture and use
Assignee: Covidien LP
•
Filing: 2012-08-20
•
Granted: 2013-10-01
•
Expires: 2032-08-20
Abstract
Abstract Material transport catheters and methods for their use rely on rotation of an impeller within a catheter body and a clearing element for preventing buildup of materials at the opening of the catheter body. The impeller preferably comprises an inner tube or shaft having a helical rotor fainted over an outer surface thereof. The clearing element may comprise a free end of a structure near the distal end of the catheter body for disrupting clot, wherein the free end of the structure extends into the distal opening of the catheter body to break up materials as the impeller is rotated. Alternatively, the clearing element may comprise a cutting member disposed at the distal opening of the catheter body.
Inventors
- 👤 Denise M. Demarais
- 👤 Stephen A. Leeflang
- 👤 Michael A. Evans
- 👤 Gwendolyn A. Watanabe
- 👤 John C. Tanner, III
- 👤 Christian S. Eversull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:40
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0021; A61M25/0023; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320725; A61M29/00; A61M29/02; A61B2017/00681; A61B2017/00685; A61B17/320758; A61B2017/320775
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
92 words
Apparatus for transporting material between a target site in a lumen of a body and a location external to the body, the apparatus comprising: an impeller including an elongate flexible tube defining a lumen, a coiled rotor element disposed over an outer surface of the tube, and a jacket securing the coiled rotor element to the outer surface of the tube; means for introducing the impeller to the target site; and means for rotating the coiled rotor element within the body lumen to advance the material proximally away from the target site.
Claim 2
Dependent Claim
92 words
Apparatus for transporting material between a target site in a lumen of a body and a location external to the body, the apparatus comprising: an impeller including an elongate flexible tube defining a lumen, a coiled rotor element disposed over an outer surface of the tube, and a jacket securing the coiled rotor element to the outer surface of the tube; means for introducing the impeller to the target site; and means for rotating the coiled rotor element within the body lumen to advance the material proximally away from the target site.
Claim 3
Dependent Claim
33 words
The apparatus of claim 1 , the impeller further comprising a macerator attached at a distal end of the coiled rotor element, wherein rotating the coiled rotor element further comprises rotating the macerator.
Claim 4
Dependent Claim
23 words
The apparatus of claim 1 , the impeller further comprising a clearing element comprising a cutting disk attached to the coiled rotor element.
Claim 5
Dependent Claim
32 words
The apparatus of claim 1 , wherein a distal portion of the coiled rotor element is unattached to the tube to provide a whip element as the coiled rotor element is rotated.
Claim 6
Dependent Claim
38 words
The apparatus of claim 1 , wherein the tube has an outer diameter in the range from 0.5 mm to 5 mm, and the coiled rotor element has a pitch in the range from 1 to 50 turns/cm.
Claim 7
Dependent Claim
20 words
The apparatus of claim 1 , further comprising a second coiled rotor element disposed within the lumen of the tube.
Claim 8
Dependent Claim
16 words
The apparatus of claim 6 , wherein the first and second coiled rotor elements are counterwound.
Claim 9
Dependent Claim
16 words
The apparatus of claim 6 , wherein the first and second coiled rotor elements are co-wound.
Claim 10
Dependent Claim
26 words
The apparatus of claim 1 , wherein the tube comprises a braided tube, a mesh tube, a coil, a stacked coil, or a coil-reinforced polymer tube.
Claim 11
Dependent Claim
23 words
The apparatus of claim 9 , wherein the coiled rotor element comprises a single filament, a multi-filar, stacked filaments, or multiple filament cable.
Claim 12
Dependent Claim
23 words
The apparatus of claim 10 , wherein the filaments comprise a round wire, a ribbon wire, or a wire having an irregular cross-section.
Claim 13
Independent Claim
91 words
A method for transporting material between a target site in a lumen of a body and a location external to the body, the method comprising: introducing a distal end of an impeller to the target site, the impeller including an elongate, hollow, flexible tube, a coiled rotor element disposed over an outer surface of the tube, and a jacket securing the coiled rotor element to the outer surface of the tube; and rotating the coiled rotor element within the body lumen to advance the material proximally away from the target site.
Claim 14
Independent Claim
91 words
A method for transporting material between a target site in a lumen of a body and a location external to the body, the method comprising: introducing a distal end of an impeller to the target site, the impeller including an elongate, hollow, flexible tube, a coiled rotor element disposed over an outer surface of the tube, and a jacket securing the coiled rotor element to the outer surface of the tube; and rotating the coiled rotor element within the body lumen to advance the material proximally away from the target site.
Claim 15
Dependent Claim
33 words
The method of claim 12 , the impeller further comprising a macerator attached at a distal end of the coiled rotor element, wherein rotating the coiled rotor element further comprises rotating the macerator.
Claim 16
Dependent Claim
23 words
The method of claim 12 , the impeller further comprising a clearing element comprising a cutting disk attached to the coiled rotor element.
Claim 17
Dependent Claim
32 words
The method of claim 12 , wherein a distal portion of the coiled rotor element is unattached to the tube to provide a whip element as the coiled rotor element is rotated.
Claim 18
Dependent Claim
38 words
The method of claim 12 , wherein the tube has an outer diameter in the range from 0.5 mm to 5 mm, and the coiled rotor element has a pitch in the range from 1 to 50 turns/cm.
Claim 19
Dependent Claim
20 words
The method of claim 12 , further comprising a second coiled rotor element disposed within the lumen of the tube.
Claim 20
Dependent Claim
16 words
The method of claim 17 , wherein the first and second coiled rotor elements are counterwound.
Claim 21
Dependent Claim
16 words
The method of claim 17 , wherein the first and second coiled rotor elements are co-wound.
Claim 22
Dependent Claim
26 words
The method of claim 12 , wherein the tube comprises a braided tube, a mesh tube, a coil, a stacked coil, or a coil-reinforced polymer tube.
Claim 23
Dependent Claim
23 words
The method of claim 20 , wherein the coiled rotor element comprises a single filament, a multi-filar, stacked filaments, or multiple filament cable.
Claim 24
Dependent Claim
23 words
The method of claim 21 , wherein the filaments comprise a round wire, a ribbon wire, or a wire having an irregular cross-section.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2016-09-30 | 2017-04-01 | 2017-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2020-09-30 | 2021-04-01 | 2021-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2024-09-30 | 2025-04-01 | 2025-10-01 | $7700.00 | Window Closed / Lapsed |